You create the format in modeling. There is one provided in NX, I'm not sure about earlier versions.
To add text, you need to be in the drafting module, with "Display Sheet" untoggled. This allows you to place annotations in the model view.
As far as the applicable drawing sheet dimensions, etc, you need to refer to the appropriate standards.
When you save the file, make sure that File -> Options -> Save Options has the Pattern Data Only bullet checked.